Can the Operator Panel in 2.8+ be moved?
I have since realized that since I rely on shortcuts and don't use any of the buttons on the T panel, I can just collapse it (T) and save my Startup File that way.
Then the Operator panel slides over to the left corner and has a nice place where it can stay collapsed until I need to tweak params. Then I can click it to expand it and do that. It all works out.
Reference:

(Pretty obvious, actually. But as I've just jumped from 2.79 to 2.9 I'm still getting adjusted to the new UI.)
I'm still welcoming answers with regard to customizing the placement of the T Panel and Operator Panel in 2.8+, in case anyone else has something to add. Maybe a customization tip or trick that isn't so obvious?